Add support for BPF inline assembly

compiler/rustc_span/src/symbol.rs

@@ -328,6 +328,7 @@ symbols! {
         box_free,
         box_patterns,
         box_syntax,
+        bpf_target_feature,
         braced_empty_structs,
         branch,
         breakpoint,
@@ -1332,6 +1333,7 @@ symbols! {
         wrapping_add,
         wrapping_mul,
         wrapping_sub,
+        wreg,
         write_bytes,
         xmm_reg,
         ymm_reg,